|Year|Company|Number of Members Affected|Duration of Strike|Notes|
|---|---|---|---|---|
|1955|Southern Bell Telephone Co.|50,000|72 days|Strike was in answer to management's effort to prohibit workers from striking.|
|1968|AT&T|200,000|18 days|Wage increases to compensate for cost of living, and medical benefits won|
|1971|Bell System|400,000|1 week|Cost of Living Allowance (COLA) won for workers|
|1983|Bell System|600,000|22 days|Last contract with the Bell System before its breakup. Bell System sought givebacks. The contract resulted in Wage increases, employment security, pension, and health improvements.|
|1986|AT&T|175,000|25 days|COLA clause suspended in contract - former Bell System contracts vary substantially from the AT&T contract.|
|1989|AT&T|175,000|n/a|Child and elder care benefits added to contract. COLA clause removed from contract|
|1989|NYNEX|175,000|17 weeks|Strike was due to major health care cuts by NYNEX|
|1998|US West|34,000|15 day|Strike was due to mandatory overtime demands and forced pay-for-performance plan. Overtime caps were won.|
|2000|Verizon|80,000|3 weeks|Strike was due to mandatory overtime demands. Provisions for stress were won.|
|2011|Verizon|45,000|13 days|Strike was due to major wage and health care cuts by Verizon, a forced pay-for-performance plan and movement-of-work job security provisions. Contract extended.|
|2012|AT&T|20,000|2 Days|AT&T West; California, Nevada, and AT&T East; Connecticut - Unfair labor practice strike during contract negotiations.|

Question: did the bell system strike last longer in 1971 or 1983?
Answer: 1983